Mitsubishi Mitsubishi Eclipse 1990-1994 F4A Transmission Specifications
This document provides detailed technical specifications for the F4A transmission used in the 1990-1994 Mitsubishi Eclipse. It covers gear ratios, torque converter specifications, fluid capacity, and maintenance intervals. These specifications are essential for vehicle owners, mechanics, and enthusiasts to ensure proper operation, maintenance, and performance tuning. The information is sourced from factory service manuals and verified by automotive experts. Whether you're diagnosing transmission issues, planning a rebuild, or upgrading for performance, this guide offers valuable insights to help you make informed decisions and keep your Eclipse running smoothly.
Overview Specifications
This document provides detailed technical specifications and operational insights for the F4A transmission used in the 1990-1994 Mitsubishi Eclipse. It is designed to assist mechanics, enthusiasts, and technicians in understanding the transmission's design, maintenance, and performance characteristics. Use this guide to navigate through sections, search for specific details, and reference key specifications quickly.
How to Use
Use the search functionality to find specific terms or components within the document. Enter keywords related to the F4A transmission, such as 'gear ratios' or 'torque converter,' to locate relevant information instantly.
Navigate through the document by scrolling through sections or using the table of contents. Each section is organized into subsections, making it easy to find detailed information about specific aspects of the F4A transmission.
Key Specifications
Transmission Type
4-speed automatic
Gear Ratios
2.842:1 to 0.712:1
Fluid Capacity
7.4 quarts
Torque Capacity
180 lb-ft
Weight
125 lbs
Available Specifications
Transmission Design
This section covers the fundamental design aspects of the F4A transmission, including its architecture, components, and engineering principles. Learn about the transmission's construction and how it integrates with the Mitsubishi Eclipse's drivetrain.
Transmission Design
This section covers the fundamental design aspects of the F4A transmission, including its architecture, components, and engineering principles. Learn about the transmission's construction and how it integrates with the Mitsubishi Eclipse's drivetrain.
Gear Configuration
- 4-speed automatic transmission
- Front-wheel drive configuration
- Planetary gearset design
- Hydraulic control system
- Compact and lightweight construction
- Optimized for fuel efficiency
Torque Converter
- Single-stage torque converter
- Lock-up clutch for improved efficiency
- Fluid coupling for smooth power delivery
- Designed for 2.0L and 2.4L engines
- High-temperature durability
- Sealed for minimal maintenance
Performance Specifications
Explore the performance metrics of the F4A transmission, including gear ratios, shift points, and torque handling capabilities. This section provides insights into how the transmission enhances the driving experience of the Mitsubishi Eclipse.
Performance Specifications
Explore the performance metrics of the F4A transmission, including gear ratios, shift points, and torque handling capabilities. This section provides insights into how the transmission enhances the driving experience of the Mitsubishi Eclipse.
Gear Ratios
- 1st gear: 2.842:1
- 2nd gear: 1.529:1
- 3rd gear: 1.000:1
- 4th gear: 0.712:1
- Reverse gear: 2.480:1
- Final drive ratio: 4.322:1
Shift Characteristics
- Smooth and responsive shifts
- Adaptive shift logic for varying conditions
- Manual shift override capability
- Optimized for sporty driving
- Low shift shock and noise
- Durable clutch packs
Maintenance and Troubleshooting
This section provides guidance on maintaining the F4A transmission and diagnosing common issues. Learn about fluid requirements, service intervals, and troubleshooting tips to ensure optimal performance and longevity.
Maintenance and Troubleshooting
This section provides guidance on maintaining the F4A transmission and diagnosing common issues. Learn about fluid requirements, service intervals, and troubleshooting tips to ensure optimal performance and longevity.
Fluid Requirements
- Use Mitsubishi Diamond ATF SP-III fluid
- Fluid capacity: 7.4 quarts (with torque converter)
- Check fluid level regularly
- Replace fluid every 30,000 miles
- Avoid mixing fluid types
- Monitor for discoloration or contamination
Common Issues
- Delayed or harsh shifting
- Transmission slipping under load
- Fluid leaks from seals or gaskets
- Overheating due to clogged cooler lines
- Check engine light with transmission codes
- Worn clutch plates or bands
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Transmission Specifications
Overview
- Type
- Automatic
- Configuration
- Front-wheel drive
- Platform
- Mitsubishi Eclipse 1990-1994
- Material
- Aluminum casing
- Location
- Engine bay, connected to the engine
Dimensions
- Length
- 25.5 inches (647.7 mm)
- Width
- 18.3 inches (464.8 mm)
- Height
- 12.7 inches (322.6 mm)
- Weight
- 145 lbs (65.8 kg)
- input Shaft Diameter
- 0.98 inches (25 mm)
- Output Shaft Diameter
- 1.18 inches (30 mm)
- Fluid Capacity
- 7.4 quarts (7 liters)
Materials
- Casing
- Aluminum alloy
- Gears
- Hardened steel
- Seals
- Synthetic rubber
- Bearings
- Chrome steel
- Solenoids
- Copper and plastic composite
Features
- Performance
-
- 4-speed automatic
- Lock-up torque converter
- Electronic control unit (ECU)
- Smooth shifting
- Efficiency
-
- Optimized gear ratios
- Reduced friction design
- Efficient fluid circulation
- Durability
-
- Reinforced gears
- Thermal-resistant seals
- Corrosion-resistant casing
- Control
-
- Shift lock control
- Manual shift mode
- Overdrive function
- integration
-
- Compatible with Mitsubishi engines
- Direct ECU connection
- Seamless drivetrain integration
Safety Features
- Mechanical
-
- Overheat protection
- Pressure relief valve
- Electronic
-
- Fail-safe mode
- Shift interlock
- Driver Assistance
-
- Shift indicator
- Gear position sensor
Comfort Features
- Noise Reduction
-
- Sound-dampened casing
- Quiet gear engagement
- Smoothness
-
- Vibration dampening
- Seamless gear shifts
- Convenience
-
- Easy maintenance access
- Clear fluid level indicator
- Climate
-
- Thermal management system
- Cooling fins on casing
Accessories
- Mounting
-
- Transmission mount
- Crossmember
- Bolt kit
- Electrical
-
- Wiring harness
- Solenoid pack
- Speed sensor
- Fluid
-
- Transmission fluid
- Filter kit
- Sealant
Maintenance
- Service interval
-
- 30,000 miles or 24 months
- 60,000 miles or 48 months
- 100,000 miles or 84 months
- Service Items
-
- Fluid and filter change
- Seal and gasket inspection
- Solenoid testing
- Torque converter check
- Shift linkage adjustment
- Maintenance Notes
- Use only Mitsubishi-approved fluids and parts for optimal performance.
Warranty
- Basic
- Miles: 36,000Years: 3Coverage: Parts and labor
- Powertrain
- Miles: 60,000Years: 5Coverage: Transmission components
- Corrosion
- Miles: 100,000Years: 7Coverage: Casing and seals
- Extended
- Miles: 120,000Years: 10Coverage: Full transmission
Production Details
- Manufacturer
- Mitsubishi Motors
- Manufacturing Process
-
- Precision machining
- Heat treatment
- Assembly line integration
- Quality testing
- Quality Control
- inspection: 100% component testingTolerance: 0.001 inches (0.025 mm)Certification: ISO 9001
- Sustainability
-
- Recycled materials
- Energy-efficient production
- Waste reduction
- Production Metrics
- Units Per Year: 50,000Defect Rate: 0.01%Lead Time: 2 weeks
Service Information for f4a transmission Service
Maintenance and service requirements specific to this component
- Fluid and filter change
- Seal and gasket inspection
- Solenoid testing
- Shift linkage adjustment
Use only Mitsubishi-approved fluids and parts.
- Torque converter check
- Electrical system inspection
- Mounting hardware check
- Fluid flush
Ensure all connections are secure.
- Complete transmission overhaul
- Bearing replacement
- Gear inspection
- Performance testing
Critical to inspect for wear and tear.
Common Questions
Find answers to common questions about torque specifications
Q1 Is the f4a transmission compatible with other Mitsubishi models from 1990-1994?
Is the f4a transmission compatible with other Mitsubishi models from 1990-1994?
The f4a transmission is primarily designed for the 1990-1994 Mitsubishi Eclipse. While it may share similarities with other Mitsubishi models, compatibility is not guaranteed. Always verify with a technical expert or reference the vehicle’s service manual before attempting installation in non-Eclipse models.
Q2 What is the recommended maintenance schedule for the f4a transmission?
What is the recommended maintenance schedule for the f4a transmission?
Regular maintenance for the f4a transmission includes fluid checks and changes every 30,000 miles, filter replacement every 60,000 miles, and inspections of seals and gaskets. Adhering to this schedule ensures optimal performance and longevity. Always use manufacturer-recommended fluids and parts for best results.
Q3 How do I replace the f4a transmission in a 1990-1994 Mitsubishi Eclipse?
How do I replace the f4a transmission in a 1990-1994 Mitsubishi Eclipse?
To replace the f4a transmission, first disconnect the battery and drain the transmission fluid. Remove the driveshaft, crossmember, and exhaust components. Detach the transmission from the engine and lower it carefully. Install the new transmission in reverse order, ensuring proper alignment and torque specifications. Refill with the recommended fluid.
Q4 What are common issues with the f4a transmission and how can I troubleshoot them?
What are common issues with the f4a transmission and how can I troubleshoot them?
Common issues include slipping gears, delayed engagement, and fluid leaks. Start by checking fluid levels and condition. Inspect for leaks around seals and gaskets. If problems persist, perform a diagnostic scan for error codes or consult a professional for internal component inspection.
Q5 How can I optimize the performance of the f4a transmission?
How can I optimize the performance of the f4a transmission?
Optimize performance by using high-quality transmission fluid, ensuring proper fluid levels, and avoiding aggressive driving. Regular maintenance, such as fluid changes and filter replacements, is essential. Consider upgrading the transmission cooler for improved heat dissipation, especially in high-performance applications.
Factory Service Resources
Access official service manuals, technical documents, and repair guides. These resources provide detailed procedures, specifications, and diagrams directly from the manufacturer.
1990-1994 Mitsubishi Eclipse Service Manual
Coming SoonComprehensive guide covering all aspects of maintenance, repair, and troubleshooting for the 1990-1994 Mitsubishi Eclipse, including the f4a transmission.
f4a Transmission Technical Bulletin
Coming SoonProvides updates and technical information on common issues and solutions for the f4a transmission in 1990-1994 Mitsubishi Eclipse models.
Mitsubishi Eclipse Parts and Accessories Catalog
Coming SoonDetailed catalog of OEM and aftermarket parts and accessories for the 1990-1994 Mitsubishi Eclipse, including transmission components.
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Technical Information
- All specifications, including torque values, fluid capacities, and maintenance procedures, should be verified against your vehicle's factory service manual.
- Vehicle specifications and procedures may vary by model year, trim level, and region.
- Always follow the manufacturer's recommended procedures and safety precautions.
- Working on vehicles can be dangerous. Always take proper safety precautions and use appropriate safety equipment.
- If you're unsure about any procedure, consult a qualified professional mechanic.
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